Prune SkRTree

bench/RTreeBench.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Benchmark.h"
 #include "SkCanvas.h"
 #include "SkRTree.h"
 #include "SkRandom.h"
 #include "SkString.h"
 
 // confine rectangles to a smallish area, so queries generally hit something, and overlap occurs:
 static const SkScalar GENERATE_EXTENTS = 1000.0f;
 static const int NUM_BUILD_RECTS = 500;
 static const int NUM_QUERY_RECTS = 5000;
 static const int GRID_WIDTH = 100;
 
 typedef SkRect (*MakeRectProc)(SkRandom&, int, int);
 
-// Time how long it takes to build an R-Tree either bulk-loaded or not
+// Time how long it takes to build an R-Tree.
 class RTreeBuildBench : public Benchmark {
 public:
-    RTreeBuildBench(const char* name, MakeRectProc proc, SkRTree* tree)
-        : fTree(tree)
-        , fProc(proc) {
+    RTreeBuildBench(const char* name, MakeRectProc proc) : fProc(proc) {
         fName.printf("rtree_%s_build", name);
     }
 
     virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
         return backend == kNonRendering_Backend;
     }
 
-    virtual ~RTreeBuildBench() {
-        fTree->unref();
-    }
 protected:
     virtual const char* onGetName() SK_OVERRIDE {
         return fName.c_str();
     }
     virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         SkRandom rand;
         SkAutoTMalloc<SkRect> rects(NUM_BUILD_RECTS);
         for (int i = 0; i < NUM_BUILD_RECTS; ++i) {
             rects[i] = fProc(rand, i, NUM_BUILD_RECTS);
         }
 
         for (int i = 0; i < loops; ++i) {
-            fTree->insert(&rects, NUM_BUILD_RECTS);
+            SkRTree tree;
+            tree.insert(&rects, NUM_BUILD_RECTS);
             SkASSERT(rects != NULL);  // It'd break this bench if the tree took ownership of rects.
-            fTree->clear();
         }
     }
 private:
-    SkRTree* fTree;
     MakeRectProc fProc;
     SkString fName;
     typedef Benchmark INHERITED;
 };
 
-// Time how long it takes to perform queries on an R-Tree, bulk-loaded or not
+// Time how long it takes to perform queries on an R-Tree.
 class RTreeQueryBench : public Benchmark {
 public:
-    RTreeQueryBench(const char* name, MakeRectProc proc, SkRTree* tree)
-        : fTree(tree)
-        , fProc(proc) {
+    RTreeQueryBench(const char* name, MakeRectProc proc) : fProc(proc) {
         fName.printf("rtree_%s_query", name);
     }
 
     virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
         return backend == kNonRendering_Backend;
     }
-
-    virtual ~RTreeQueryBench() {
-        fTree->unref();
-    }
 protected:
     virtual const char* onGetName() SK_OVERRIDE {
         return fName.c_str();
     }
     virtual void onPreDraw() SK_OVERRIDE {
         SkRandom rand;
         SkAutoTMalloc<SkRect> rects(NUM_QUERY_RECTS);
         for (int i = 0; i < NUM_QUERY_RECTS; ++i) {
             rects[i] = fProc(rand, i, NUM_QUERY_RECTS);
         }
-        fTree->insert(&rects, NUM_QUERY_RECTS);
+        fTree.insert(&rects, NUM_QUERY_RECTS);
     }
 
     virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         SkRandom rand;
         for (int i = 0; i < loops; ++i) {
             SkTDArray<unsigned> hits;
             SkRect query;
             query.fLeft   = rand.nextRangeF(0, GENERATE_EXTENTS);
             query.fTop    = rand.nextRangeF(0, GENERATE_EXTENTS);
             query.fRight  = query.fLeft + 1 + rand.nextRangeF(0, GENERATE_EXTENTS/2);
             query.fBottom = query.fTop  + 1 + rand.nextRangeF(0, GENERATE_EXTENTS/2);
-            fTree->search(query, &hits);
+            fTree.search(query, &hits);
         }
     }
 private:
-    SkBBoxHierarchy* fTree;
+    SkRTree fTree;
     MakeRectProc fProc;
     SkString fName;
     typedef Benchmark INHERITED;
 };
 
-static inline SkRect make_concentric_rects_increasing(SkRandom&, int index, int numRects) {
-    SkRect out = SkRect::MakeWH(SkIntToScalar(index+1), SkIntToScalar(index+1));
-    return out;
-}
-
 static inline SkRect make_XYordered_rects(SkRandom& rand, int index, int numRects) {
     SkRect out;
     out.fLeft   = SkIntToScalar(index % GRID_WIDTH);
     out.fTop    = SkIntToScalar(index / GRID_WIDTH);
     out.fRight  = out.fLeft + 1 + rand.nextRangeF(0, GENERATE_EXTENTS/3);
     out.fBottom = out.fTop  + 1 + rand.nextRangeF(0, GENERATE_EXTENTS/3);
     return out;
 }
 static inline SkRect make_YXordered_rects(SkRandom& rand, int index, int numRects) {
     SkRect out;
     out.fLeft   = SkIntToScalar(index / GRID_WIDTH);
     out.fTop    = SkIntToScalar(index % GRID_WIDTH);
     out.fRight  = out.fLeft + 1 + rand.nextRangeF(0, GENERATE_EXTENTS/3);
     out.fBottom = out.fTop  + 1 + rand.nextRangeF(0, GENERATE_EXTENTS/3);
     return out;
 }
 
 static inline SkRect make_random_rects(SkRandom& rand, int index, int numRects) {
     SkRect out;
     out.fLeft   = rand.nextRangeF(0, GENERATE_EXTENTS);
     out.fTop    = rand.nextRangeF(0, GENERATE_EXTENTS);
     out.fRight  = out.fLeft + 1 + rand.nextRangeF(0, GENERATE_EXTENTS/5);
     out.fBottom = out.fTop  + 1 + rand.nextRangeF(0, GENERATE_EXTENTS/5);
     return out;
 }
 
+static inline SkRect make_concentric_rects(SkRandom&, int index, int numRects) {
+    return SkRect::MakeWH(SkIntToScalar(index+1), SkIntToScalar(index+1));
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
-DEF_BENCH(return SkNEW_ARGS(RTreeBuildBench,
-            ("XY_sorted", &make_XYordered_rects, SkRTree::Create(5, 16)));)
-DEF_BENCH(return SkNEW_ARGS(RTreeBuildBench,
-            ("XY_unsorted", &make_XYordered_rects, SkRTree::Create(5, 16, 1, false)));)
-DEF_BENCH(return SkNEW_ARGS(RTreeBuildBench,
-            ("YX_sorted", &make_YXordered_rects, SkRTree::Create(5, 16)));)
-DEF_BENCH(return SkNEW_ARGS(RTreeBuildBench,
-            ("YX_unsorted", &make_YXordered_rects, SkRTree::Create(5, 16, 1, false)));)
-DEF_BENCH(return SkNEW_ARGS(RTreeBuildBench,
-            ("random_sorted", &make_random_rects, SkRTree::Create(5, 16)));)
-DEF_BENCH(return SkNEW_ARGS(RTreeBuildBench,
-            ("random_unsorted", &make_random_rects, SkRTree::Create(5, 16, 1, false)));)
-DEF_BENCH(return SkNEW_ARGS(RTreeBuildBench,
-            ("concentric_sorted", &make_concentric_rects_increasing, SkRTree::Create(5, 16)));)
-DEF_BENCH(return SkNEW_ARGS(RTreeBuildBench,
-            ("concentric_unsorted",
-             &make_concentric_rects_increasing,
-             SkRTree::Create(5, 16, 1, false)));)
+DEF_BENCH(return SkNEW_ARGS(RTreeBuildBench, ("XY",         &make_XYordered_rects)));
+DEF_BENCH(return SkNEW_ARGS(RTreeBuildBench, ("YX",         &make_YXordered_rects)));
+DEF_BENCH(return SkNEW_ARGS(RTreeBuildBench, ("random",     &make_random_rects)));
+DEF_BENCH(return SkNEW_ARGS(RTreeBuildBench, ("concentric", &make_concentric_rects)));
 
-DEF_BENCH(return SkNEW_ARGS(RTreeQueryBench,
-            ("XY_sorted", &make_XYordered_rects, SkRTree::Create(5, 16)));)
-DEF_BENCH(return SkNEW_ARGS(RTreeQueryBench,
-            ("XY_unsorted", &make_XYordered_rects, SkRTree::Create(5, 16, 1, false)));)
-DEF_BENCH(return SkNEW_ARGS(RTreeQueryBench,
-            ("YX_sorted", &make_YXordered_rects, SkRTree::Create(5, 16)));)
-DEF_BENCH(return SkNEW_ARGS(RTreeQueryBench,
-            ("YX_unsorted", &make_YXordered_rects, SkRTree::Create(5, 16, 1, false)));)
-DEF_BENCH(return SkNEW_ARGS(RTreeQueryBench,
-            ("random_sorted", &make_random_rects, SkRTree::Create(5, 16)));)
-DEF_BENCH(return SkNEW_ARGS(RTreeQueryBench,
-            ("random_unsorted", &make_random_rects, SkRTree::Create(5, 16, 1, false)));)
-DEF_BENCH(return SkNEW_ARGS(RTreeQueryBench,
-            ("concentric_sorted", &make_concentric_rects_increasing, SkRTree::Create(5, 16)));)
-DEF_BENCH(return SkNEW_ARGS(RTreeQueryBench,
-            ("concentric_unsorted",
-             &make_concentric_rects_increasing,
-             SkRTree::Create(5, 16, 1, false)));)
+DEF_BENCH(return SkNEW_ARGS(RTreeQueryBench, ("XY",         &make_XYordered_rects)));
+DEF_BENCH(return SkNEW_ARGS(RTreeQueryBench, ("YX",         &make_YXordered_rects)));
+DEF_BENCH(return SkNEW_ARGS(RTreeQueryBench, ("random",     &make_random_rects)));
+DEF_BENCH(return SkNEW_ARGS(RTreeQueryBench, ("concentric", &make_concentric_rects)));